[PATCH] Improve run_event abstraction in CTDB

[Amitay Isaacs]

Hi,

To support multi-component event daemon, few changes are required to
run_event abstraction.  These include:

- Use a single instance of run_proc_context across multiple run_event
contexts.  This is required since run_proc uses SIGCHLD handler to
track process terminations and we cannot have multiple SIGCHLD
handlers.

- Improve error reporting

- Ability to run scripts even if one or more script(s) fail.  This is
required for notifications.

Please review and push.

Amitay.
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